Sack filler



A. J. sun-n 1 No v. 23 ,-1 ze.

SACK FILTER Filed Maw 27 1925 2 Sheets-Sheet 1 1,608,041 A. J. SMITHNov. 23 1926.

SACK FILLER 7 Filed May 27, 1925 2 Sheets-Sheet 2 ARTHUR 3'. SMITH, F.WASGO, OREGON.

SACK FILLER.

Application filed May 27,

This invention is a machine for use in filling sacks and is intendedmore particularly for use in connection with the bagging of grain, theobject of the invention being to provide means whereby the commoditypoured into the sack will be caused to quickly settle to the bottomthereof so that the sack may be more completely filled than hasheretofore been possible. The invention is illustrated in theaccompanying drawings and consists in certain novel features which willbe hereinafter first fully described and then more particularly pointedout in the appended claims.

In the drawings:

Figure 1 is a plan view, partly broken away, of my improved machineFig.2 is a side elevation of the same;

. Fig. 3 is a transverse vertical section on the line 3-3 of Fig. 1;

Fig. l is a detail section on the line 4-4 of Fig. 1, and 1 Fig. 5 is anenlarged detail section on the line 5-5 of Fig. 1.

I In carrying out the present invention, I employ a base frameconsisting of side rails 1 which may be bolted to thefloor of awarehouse or anchored upon any other foundation. These side rails aredisposed in parallel relation and on their inner faces at theirupperends are provided with longitudinal flanges 2, as shown mostclearly in Fig. 3. Secured in and rising'from the saidflanges 2 inrectangular relation are a plurality of posts or guide pins 3 which areadapted to pass through openings 4, provided therefor in a platform 5,and are equipped with fixed collars or abutments 6 between which and therespective flanges 2 are disposed expansion springs 7. These springs '7serve as bufifers to absorb the shocks upon the platform in theoperation of the device as will hereinafter appear, and also yieldablysupport the pins in their er:- treme upper positions, it beingunderstood that the openings i in the platform are greater in diameterthan the pins or posts so that the platform may play freely verticallyupon the pins or posts. The platform may be of any material possessingthe requisite strength and durability and will ordinarily be a stoutboard of rectangular form having the openings 1 near its corners, aswill be readily understood upon reference to Fig. 1. On the under sideof the platform are secured wear plates 8 of metal against which 1925.Serial No. 33,237.

cams 9 are adapted to ride so as to impart vertical movement to theplatform. .These cams are carried by transverse shafts 10 which aremounted in bearings 11 provided therefor upon the respective rails 1 andone of said shafts 10 is disposed adjacent one end of the supportingframe while the other shaft is disposed at a point intermediate the endsthereof, Upon one end of each shaft is a sprocket wheel 12' around whichis trained a sprocket chain 13 whereby the shafts will be caused torotate in unison and in opposite directions, as will be understood uponreference to Fig. 2, it being also noted that'the cams 9 are so arrangedthat they will allhave the same relation to the platformat all times,although they rotate in opposite directions. "A tightener is alsoprovided to maintain the chain 13 in taut relation to the sprockets 12and to compensate for wear upon the parts, this tightener including asprocket 13 about which the chain is trained, as shown most clearly inFig. 2. The tightener sprocket is located at the opposite end of theframe from the end sprocket 12 and is carried by a shaft 1 1 whichisjournaled in a bearing 15 slidably fitted in an opening 16extendinglongitudinally' of the frame member 1.' At theadjacent end ofthe said frame member is an outwardly projecting lug 17 and an adjustingscrew or bolt 18 is fitted through said 'lug and has threaded engagementwith the bearing 15 so as to adjust the bearing along the opening 16 inan obvious manner,it being understood that this slidable bearing is-duplicated at the two sides of the frame and:

the shaft 14 extends across the frame so that it may be maintained atall times ata right angle to the frame and uneven wear upon the chainor, the sprockets will be avoided.-

The hub of the inner sprocket 12 is pro: vided with a clutch face 19 andis fixed upon the shaft 10. Loose upon the said shaft at the outer sideof the sprocket is a band pulley 20 having a clutch hub 21 adapted tomate with the clutch face 19 and held y'ieldably in engagement therewithby a spring 22 coiled around the outer end of the shaft between anabutment 23 thereon and the outer end of the pulley hub. The outer endportion of the pulley hub is constructed with an annular groove 24 inwhich is en gaged a yoke 25 on the end of a shifting bar 26 which isloosely mounted at its opposite end upon the end shaft 10, as shown sidemember 1 of the frame and in the outer end of this arm or bracket isrotatably mounted a vertically extending rock shaft 28 having a crankhandle 29 at its upper end and provided at its lower end with a crank 30bearing against the inner side of the shifting bar 26. it will bereadily understood that the operator by manipulating the crank handle 29may rock the rod or shaft 28 and cause the crank 30 at the lower end ofthe same to bear against the bar 26 and rock the same outwardly therebydisengaging the clutch members 21 and 19. If the rock shaft be turned tosuch an extent that the crank 30 will extend at a right angle to theshift bar 26, the bar will be held in its outer position against thetension of the spring 22 and will remain in this position while a filledbag is being removed from the platform 5 and an empty bag being placedin position thereon. V fhen the bag to be filled has been properlyarranged upon the platform, the rock shaft is returned to the positionshown in Fig. 1, thereby permitting the clutch members to re-engage andtransmit motion to the two cam shafts. The cams will then be, of course,caused to rotate and as they assume the positions shown in Fig. 1 and infull lines in Fig. 4, they will raise the platform. As the high part ofthe cam clears the wear plates upon the platform and the straight facesof the cams are presented to the platform, the platform will dropquickly and will thereby exert a jogging action upon the bags so thatthe material being placed in the bags will be caused to rapidly settleto the bottoms thereof and fill all the corners of the bottom. When theplatform descends, it will, of course, impinge upon the abutments orcollars 6 upon the guide pins or posts 3 and the shock of such impactwill be absorbed by the springs 7. The platform may have a projection 30formed or secured thereon to prevent the sacks from sliding.

My device is exceedingly simple in the construction and arrangement ofits parts and will operate in a highly efficient manner to facilitatethe filling of bags to their utmost capacity.

Having thus described the invention, I claim:

1. In an apparatus for the purpose set forth, the combination of asupporting structure, a platform mounted above the supporting structurefor vertical movement, shafts journaled in the supporting structure andextending beneath the platform in transverse spaced relation to eachother, cams on said shafts having their cam surfaces facing in oppositedirections and arranged to ride against the under face of the platformand lift the platform when the shafts are rotated, means to impartsimultaneous rotation to said shafts in opposite directions to cause thecams to have movement in opposite directions along the platform'whilelifting the same, and means carried by one of the shafts for driving thesame.

2. In a machine of the character described, a. supporting structure, aplatform disposed above said supporting structure and slida-bly mountedfor vertical reciprocating movement, a shaft journaled in saidsupporting structure and extending beneath said platform, a second shaftjournaled in said supporting structure and extending beneath saidplatform at one side of the first shaft, sprocket wheels rigidly securedupon said shafts, an idler sprocket rotatably mounted at the oppositeside of the first shaft from the second shaft, a sprocket chain trainedabout said idler sprocket wheel and the sprocket wheel carried by thesecond shaft and having one fii ht engaged with the sprocket wheel ofthe first shaft whereby rotary motion may be transmit-ted from one shaftto the other with the shafts rotating in opposite directions, and camscarried by said shafts beneath the platform and having their camsurfaces facing in opposite directions and adapted to engage the underface of the platform and move along the same in opposite directionswhile imparting upward movement to said platform as the shafts r0- tate.

In testimony whereof I affix my signature.

ARTHUR J. SMITH. [L.S.]

